Finding a One Shot

What I remember is that it was a setting for the mc and ml. The mc wakes up and he is trapped in a room with a serial killer (wears a mask) and no matter what they both try to do; the door does not opened until they have sex and they both cum. It's a yaoi and a one shot. I think the cover was in black and white, it was a manga, and it was like a cottage house with the mc wearing a sleeveless puff jacket. He had black short hair.
Please help me find it. Thank you.